沥青混合料抗压回弹模量与动态模量比较分析

分析了动态模量和抗压回弹模量在反映沥青混合料行为特性方面的优缺点，并对SMA13、Superpave20和Superpav也53种沥青混合料进行了不同条件下的动态模量和抗压回弹模量试验。结果表明，动态模量能综合反映温度和频率的影响，能更合理地反映沥青混合料的特性。相同温度下，抗压回弹模量对应于频率较低时的动态模量，对应频率大约在0．01—0．1Hz之间。由于抗压回弹模量试验中会引起试件的破坏，而破坏特性受混合料类型和温度的影响，所以不能确定唯一的对应频率。

Comparison of Compressive Resilient Modulus and Dynamic Modulus of Asphalt Mixtures

In this research, the advantages and disadvantages of compressive resilient modulus and dynamic modulus in describing asphalt mixture behavior were analyzed, and compressive resilient modulus and dynamic modulus tests were conducted at various conditions for SMA13, Superpave20 and Superpave25 mixtures. The results showed that dynamic modulus reflects mixture properties more accurately because it could take into account the effects of temperature and loading frequency. At same temperatures compressive resilient modulus corresponds to dynamic modulus were obtained at low frequencies. The corresponding frequency ranged from 0.01 Hz to 0.1 Hz. A single corresponding frequency could not be determined because the mixture samples were damaged in compressive resilient modulus test, and the damage characteristics were affected by mixture type and temperature.